Surface configuration of a rear bumper for a vehicle



FIG. 1 is a left perspective view of a surface configuration of a rear bumper for a vehicle according to my novel design, the right perspective view being mirror symmetrical;

FIG. 2 is a front view thereof; and,

FIG. 3 is a left side view thereof, the right side view being mirror symmetrical.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a surface configuration of a rear bumper for a vehicle, as shown and described. 